why does speccy show my ddr3 1333 running at 665MHz

[EaTBuGs]

I am running 8.00GB Single-Channel DDR3 1333 but its showing up in speccy @ 665MHz (9-9-9-24) is this normal? my bios shows it 1333 windows and speccy show above 665Mhz

 

[13thmonkey]

665*2 =1330, this is correct, it's just how you measure it.

 

[Tradesman1]

13thmonkey is correct, this is DDR (DOUBLE data rate) so always take true freq (665 here) times 2 to get effective

 

[khaled reese]

I am running 8.00GB Single-Channel DDR3 1333 but its showing up in speccy @ 665MHz (9-9-9-24) is this normal? my bios shows it 1333 windows and speccy show above 665Mhz

i know this reply is too late but anyway , you can check your ram frequency on CMD, run it as an admin, then type this command line:
wmic memorychip get speed
and you are good to go